| 摘要 |
Presented is a rear concentric suspension for bicycles, which consists in a joint for the rear fork of a bicycle, which is characterised in that the joint, intended to spin the fork in a vertical manner, is located around the axis case of the bicycle pedals. Said joint allows for a vertical movement while maintains constant the distances between the axis of the pedals and the seat and between the axis of the pedals and the axis of the rear wheel, this with the purpose of obtaining an accurate and constant adjustment of the chain diverting mechanism for performing the gear changes over the dented plates of the pedal axis and facilitating the uniform movement of the pedalling exerted by the cyclist and maintaining the distance between the axis of the pedals and the axis of the rear wheel, so as to maintain stable the tension of the chain. |
